a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
103 lines
2.1 KiB
LLVM
103 lines
2.1 KiB
LLVM
; Test moves of integers to 8-byte memory locations.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check moves of zero.
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define void @f1(ptr %a) {
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; CHECK-LABEL: f1:
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; CHECK: mvghi 0(%r2), 0
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; CHECK: br %r14
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store i64 0, ptr %a
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ret void
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}
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; Check the high end of the signed 16-bit range.
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define void @f2(ptr %a) {
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; CHECK-LABEL: f2:
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; CHECK: mvghi 0(%r2), 32767
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; CHECK: br %r14
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store i64 32767, ptr %a
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ret void
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}
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; Check the next value up, which can't use MVGHI.
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define void @f3(ptr %a) {
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; CHECK-LABEL: f3:
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; CHECK-NOT: mvghi
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; CHECK: br %r14
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store i64 32768, ptr %a
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ret void
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}
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; Check moves of -1.
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define void @f4(ptr %a) {
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; CHECK-LABEL: f4:
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; CHECK: mvghi 0(%r2), -1
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; CHECK: br %r14
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store i64 -1, ptr %a
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ret void
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}
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; Check the low end of the MVGHI range.
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define void @f5(ptr %a) {
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; CHECK-LABEL: f5:
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; CHECK: mvghi 0(%r2), -32768
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; CHECK: br %r14
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store i64 -32768, ptr %a
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ret void
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}
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; Check the next value down, which can't use MVGHI.
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define void @f6(ptr %a) {
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; CHECK-LABEL: f6:
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; CHECK-NOT: mvghi
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; CHECK: br %r14
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store i64 -32769, ptr %a
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ret void
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}
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; Check the high end of the MVGHI range.
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define void @f7(ptr %a) {
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; CHECK-LABEL: f7:
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; CHECK: mvghi 4088(%r2), 42
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %a, i64 511
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store i64 42, ptr %ptr
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ret void
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}
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; Check the next doubleword up, which is out of range. We prefer STG
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; in that case.
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define void @f8(ptr %a) {
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; CHECK-LABEL: f8:
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; CHECK: lghi [[TMP:%r[0-5]]], 42
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; CHECK: stg [[TMP]], 4096(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %a, i64 512
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store i64 42, ptr %ptr
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ret void
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}
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; Check negative displacements, for which we again prefer STG.
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define void @f9(ptr %a) {
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; CHECK-LABEL: f9:
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; CHECK: lghi [[TMP:%r[0-5]]], 42
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; CHECK: stg [[TMP]], -8(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %a, i64 -1
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store i64 42, ptr %ptr
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ret void
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}
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; Check that MVGHI does not allow an index.
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define void @f10(i64 %src, i64 %index) {
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; CHECK-LABEL: f10:
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; CHECK: lghi [[TMP:%r[0-5]]], 42
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; CHECK: stg [[TMP]], 0({{%r2,%r3|%r3,%r2}})
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; CHECK: br %r14
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%add = add i64 %src, %index
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%ptr = inttoptr i64 %add to ptr
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store i64 42, ptr %ptr
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ret void
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}
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